Then Gaius shrugged his shoulder like he was bored.
"Fine, nothing... ma'am, fine. You know, it was the Japanese who named this birdhouse."
Then Carla jumped one eyebrow further.
"Nihongine? What is that?
Gaius answered Carla's naturally questionable question with a good face.
"Heh heh. Want to know?"
An angry mark surfaced on Carla's temple at Gaius's thoughtful demeanor.
Gaius saw it or panicked and said the answer immediately.
"I'm sorry. The Japanese are the people of the country I lived in before I was reincarnated into this world."
"... oh well. With that being said, you said that it was the language of Nihongo in the country where you lived. But why do the inhabitants of the other world name things in this world, which are also in the underground world?
Then Gaius looked in trouble and shrugged his shoulder.
"Come on, I'm not sure about that either. of the previous world... that's also the Japanese stuff I lived in quite a bit in this world..."
"... so there's something else in common with the world here and there? Among other things, you lived... in a country called Nihon?
"Yes, it is. I don't know why, but maybe some other reincarnated people have built a lot in this world, and the strange thing is that there's a lot of Japanese stuff to do."
That is what Gaius said and twisted his neck wonderfully.